From ea08d4c9617b2ffd36a53d3759e102a3c52ef69b Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Wed, 8 Aug 2012 09:42:54 +0200
Subject: Improve is_error() so we can check for state of specified query

---
 program/include/rcube_db.php | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/program/include/rcube_db.php b/program/include/rcube_db.php
index 33dcbe975..01abfc8b4 100644
--- a/program/include/rcube_db.php
+++ b/program/include/rcube_db.php
@@ -266,11 +266,17 @@ class rcube_db
     /**
      * Getter for error state
      *
-     * @return boolean True on error
+     * @param int $res_id Optional query result identifier
+     *
+     * @return boolean True on error, False otherwise
      */
-    public function is_error()
+    public function is_error($res_id = null)
     {
-        return $this->db_error ? $this->db_error_msg : false;
+        if ($res_id !== null) {
+            return $this->_get_result($res_id) === false;
+        }
+
+        return $this->db_error;
     }
 
     /**
-- 
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